题目内容
【题目】They bring food to the classroom.
【答案】If they bring food to the classroom, their teacher wilt be unhappy.
【解析】句意：他们把食物带到教室。结合情景，可以改为：如果他们把食物带到教室，他们的老师就会不高兴。be unhappy不高兴，所以答案是If they bring food to the classroom, their teacher wilt be unhappy.
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